<!DOCTYPE html>
<html>
<head>
</head>
<body>
  <script type="text/javascript" src="build/dat.gui.min.js"></script>
  <script type="text/javascript">
    var obj = { x: 5 };
    var gui = new dat.GUI();
	gui.add(obj, 'x');	
  </script>
</body>
</html>